LMT Piston Upper vs PWS piston upper vs LMT DI

[david walter]

Looking at 5.56 11.5" uppers.

Will run a 308 can on the rifle or pistol.

Any feedback based on real world use?

I have a AAC 7.62 SDN can in 308, and it ran fine with my 16" DI LMT upper, but was 23" OAL and a bit unruly for a fighting platform.

Might SBR a lower or shoot the pistol lower until/if Pedo Joe gets in.

 

[Animal357]

I'm a big fan of pistons. Runs cleaner so it runs more reliable. They say that recoil is slightly increased and accuracy is slightly lowered, but neither are an issue for me for a fighting rifle, I have 12inch LMT and 12-inch Barret pistons.

 

[unclemoak]

I work on a lot of LMT guns.

My vote is an LMT 12" Piston upper.

16" barrels are easier to find, so buy one of those and have it cut down.

 

[david walter]

Do you cut and thread 16” LMT piston barrels?

I work on a lot of LMT guns.

My vote is an LMT 12" Piston upper.

16" barrels are easier to find, so buy one of those and have it cut down.

 

[THEOZZ]

I run a LMT 12" piston upper with a Surefire socom. It's been reliable and it is a little bit softer recoil than a 10.5" DI setup . The Piston setup is a little bit heavier so that's some of the perceived recoil.

 

[dms416]

Any op rod/tappet AR pattern system that isn't a short-barreled HK is fucking pointless.
- Sincerely, a guy that spent the the better part of a decade avoiding DI AR's and pissing away tons of cash on dozens of HK 416 uppers.

Given how much the gun community wants to brag about not cleaning guns, the "shit where it eats" argument is as stupid as it is wrong.

 

[unclemoak]

Do you cut and thread 16” LMT piston barrels?

Yes. Gas ports get resized to the factory sizes for the shorter lengths.